llvm-build: Don't generate duplicate dependencies when LLVMBuild files define
multiple components.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145989 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/llvm-build/llvmbuild/main.py b/utils/llvm-build/llvmbuild/main.py
index c77ffcd..9c3126c 100644
--- a/utils/llvm-build/llvmbuild/main.py
+++ b/utils/llvm-build/llvmbuild/main.py
@@ -397,9 +397,15 @@
# Construct a list of all the dependencies of the Makefile fragment
# itself. These include all the LLVMBuild files themselves, as well as
# all of our own sources.
+ #
+ # Many components may come from the same file, so we make sure to unique
+ # these.
+ build_paths = set()
for ci in self.component_infos:
- yield os.path.join(self.source_root, ci.subpath[1:],
- 'LLVMBuild.txt')
+ p = os.path.join(self.source_root, ci.subpath[1:], 'LLVMBuild.txt')
+ if p not in build_paths:
+ yield p
+ build_paths.add(p)
# Gather the list of necessary sources by just finding all loaded
# modules that are inside the LLVM source tree.